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Copy pathProject 4 - Pong.py
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Project 4 - Pong.py
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import simplegui
import random
# globals
WIDTH = 600
HEIGHT = 400
BALL_RADIUS = 20
PAD_WIDTH = 8
PAD_HEIGHT = 80
HALF_PAD_WIDTH = PAD_WIDTH / 2
HALF_PAD_HEIGHT = PAD_HEIGHT / 2
ball_pos = [WIDTH / 2, HEIGHT / 2]
ball_vel = [0, 0]
score1 = 0
score2 = 0
way = True # True for right, False for left direction
paddle1_pos = float(HEIGHT / 2)
paddle2_pos = float(HEIGHT / 2)
paddle1_vel = float(0)
paddle2_vel = float(0)
pad_acc = 5 # accelerator value for paddles
# if right is True, the ball's velocity is upper right, else upper left
def ball_init(right):
global ball_pos, ball_vel # these are vectors stored as lists
ball_pos = [WIDTH / 2, HEIGHT / 2]
if right:
ball_vel = [random.randrange(2, 4) , -(random.randrange(1, 3))]
else:
ball_vel = [ -(random.randrange(2, 4)) , -(random.randrange(1, 3))]
# event handlers
def new_game():
global paddle1_pos, paddle2_pos, paddle1_vel, paddle2_vel # these are floats
global score1, score2 # these are ints
score1 = 0
score2 = 0
paddle1_pos = float(HEIGHT / 2)
paddle2_pos = float(HEIGHT / 2)
paddle1_vel = float(0)
paddle2_vel = float(0)
way = True
ball_init(way)
def draw(c):
global score1, score2, paddle1_pos, paddle2_pos, ball_pos, ball_vel, way
# update paddle's vertical position, keep paddle on the screen
if paddle1_pos + paddle1_vel >= HALF_PAD_HEIGHT and paddle1_pos + paddle1_vel <= HEIGHT - HALF_PAD_HEIGHT:
paddle1_pos += paddle1_vel
if paddle2_pos + paddle2_vel >= HALF_PAD_HEIGHT and paddle2_pos + paddle2_vel <= HEIGHT - HALF_PAD_HEIGHT:
paddle2_pos += paddle2_vel
# draw mid line and gutters
c.draw_line([WIDTH / 2, 0],[WIDTH / 2, HEIGHT], 1, "White") #midline
c.draw_line([PAD_WIDTH, 0],[PAD_WIDTH, HEIGHT], 1, "White") #left gutter
c.draw_line([WIDTH - PAD_WIDTH, 0],[WIDTH - PAD_WIDTH, HEIGHT], 1, "White") #right gutter
# draw paddles
c.draw_line([HALF_PAD_WIDTH, paddle1_pos - HALF_PAD_HEIGHT], [HALF_PAD_WIDTH, paddle1_pos + HALF_PAD_HEIGHT], PAD_WIDTH, "White")
c.draw_line([WIDTH - HALF_PAD_WIDTH, paddle2_pos - HALF_PAD_HEIGHT], [WIDTH - HALF_PAD_WIDTH, paddle2_pos + HALF_PAD_HEIGHT], PAD_WIDTH, "White")
# update ball
ball_pos[0] = ball_pos[0] + ball_vel[0]
ball_pos[1] = ball_pos[1] + ball_vel[1]
# draw ball and scores
c.draw_circle(ball_pos, BALL_RADIUS, 3, "White", "White")
# collide and reflection of the ball from the top and bottom of wall
if ball_pos[1] <= BALL_RADIUS or ball_pos[1] >= (HEIGHT - 1) - BALL_RADIUS:
ball_vel[1] = -ball_vel[1]
# collision of ball with gutters
if (ball_pos[0] <= PAD_WIDTH + BALL_RADIUS): # if it hits left wall
# If ball position is between vertical range of paddles
if (paddle1_pos - HALF_PAD_HEIGHT <= ball_pos[1] <= paddle1_pos + HALF_PAD_HEIGHT):
ball_vel[0] = -ball_vel[0]
# incrementing velocity of ball by 10%
ball_vel[0] += ball_vel[0] * 0.10
ball_vel[1] += ball_vel[1] * 0.10
# else it scores, respawns ball
else:
score2 += 1
way = True
ball_init(way)
if (ball_pos[0] >= WIDTH - 1 - PAD_WIDTH - BALL_RADIUS): #if it hits right wall
# If ball position is between vertical range of paddles
if (paddle2_pos - HALF_PAD_HEIGHT <= ball_pos[1] <= paddle2_pos + HALF_PAD_HEIGHT):
ball_vel[0] = -ball_vel[0]
# incrementing velocity of ball by 10%
ball_vel[0] += ball_vel[0] * 0.10
ball_vel[1] += ball_vel[1] * 0.10
# else it scores, respawns ball
else:
score1 += 1
way = False
ball_init(way)
# printing scores
c.draw_text(str(score1), [150,100], 45, "Lime")
c.draw_text(str(score2), [450,100], 45, "Lime")
def keydown(key):
global paddle1_vel, paddle2_vel
if key == simplegui.KEY_MAP["up"]:
paddle2_vel -= pad_acc
elif key == simplegui.KEY_MAP["down"]:
paddle2_vel += pad_acc
elif key == simplegui.KEY_MAP['w']:
paddle1_vel -= pad_acc
elif key == simplegui.KEY_MAP['s']:
paddle1_vel += pad_acc
def keyup(key):
global paddle1_vel, paddle2_vel
if key == simplegui.KEY_MAP["up"]:
paddle2_vel += pad_acc
elif key == simplegui.KEY_MAP["down"]:
paddle2_vel -= pad_acc
elif key == simplegui.KEY_MAP['w']:
paddle1_vel += pad_acc
elif key == simplegui.KEY_MAP['s']:
paddle1_vel -= pad_acc
# create frame
frame = simplegui.create_frame("Pong by Mustafa Babil", WIDTH, HEIGHT)
frame.set_draw_handler(draw)
frame.set_keydown_handler(keydown)
frame.set_keyup_handler(keyup)
frame.add_button("Restart",new_game,100)
# start frame
frame.start()
new_game()